JOINT DE RACCORDEMENT DE DEUX ELEMENTS DE CHEMINEE ET METHODE CONNEXE

END-WISE CONNECTION OF SECOND CHIMNEY COMPONENTS AND METHOD THEREFOR

Abrégé anglais

A joint assembly for end-wise connection of two chimney components wherein
each component has an open end section with a flanged extremity. The
assembly includes an inner tubular collar having one end insertable in one end
section of a first chimney component and an opposite end insertable in one end
section of a second chimney component. A tubular band is mounted exteriorly
to the collar. The flange extremity of the first chimney component is
connected
to the flange extremity of the second chimney component so as to secure the
end sections to one another with the collar and the tubular band mounted
therein.

Revendications

WHAT IS CLAIMED IS:
1. A joint assembly for end-wise connection of a first and a
second chimney components, each one of the first and second chimney
components having an open end section with a flanged extremity, comprising:
an inner tubular collar having one end insertable in the
open end section of the first chimney component and an opposite end
insertable in the open end section of the second chimney component; and
connection means fixedly securing the flanged extremity of
the first chimney component to the flanged extremity of the second chimney
component to secure said end section of the first chimney component to said
end section of the second chimney component with said inner tubular collar.
2. The joint assembly as defined in claim 1, wherein said
connection means comprise sealing means for adhesively mounting said
flanged extremities to one another.
3. The joint assembly as defined in claim 2, wherein said
sealing means comprise a silicone layer between said flanged extremities.
4. The joint assembly as defined in any one of claims 2 and
3, wherein said connection means further comprise an assembly band mounted
exteriorly to said flanged extremities sealed to one another.
5. The joint assembly as defined in claim 4, wherein said
connection means further comprise a pair of attaching bands mounted
exteriorly to said assembly band.

6. The joint assembly as defined in claim 4, wherein said
assembly band displays a V-shaped mid section receiving the flanged
extremities sealed to one another.
7. The joint assembly as defined in claim 6, further
comprising a silicone material in said V-shaped mid-section.
8. The joint assembly as defined in claim 5, wherein said
attaching bands are welded to said assembly band.
9. The joint assembly as defined in any one of claims 1 to 8,
further comprising a tubular band mounted exteriorly to said inner tubular
collar,
said connection means fixedly securing the flanged extremity of the first
chimney component to the flanged extremity of the second chimney component
so as to secure said end section of the first chimney component to said end
section of the second chimney component with said inner tubular collar and
said tubular band mounted therein.
10. The joint assembly as defined in claim 9, wherein said
tubular band is made in ceramic fiber.
11. The joint assembly as defined in any one of claims 9 and
10, further comprising adhesive means for fixing said tubular band between
said inner tubular collar and said end sections.
12. The joint assembly as defined in any one of claims 1 to 11,
wherein one of the ends of said inner tubular collar is welded to an inner
wall of
the open end section of one of said first and second chimney components.

13. The joint assembly as defined in any one of claims 1 to 12,
wherein said first and second chimney components have an inner diameter
slightly greater than an outer diameter of said inner tubular collar.
14. The joint assembly as defined in claim 13, wherein said
open end sections of said first and second chimney components have an inner
diameter greater than the inner diameter of said first and second chimney
components.
15. A method for end-wise connection of a first and a second
chimney components in a joint assembly, each one of the first and second
chimney components having an open end section with a flanged extremity,
comprising the steps of:
a) inserting an inner tubular collar in the open end section of the
first chimney component;
b) applying a sealant circumferentially on the flanged extremity of
the open end section of the second chimney component; and
c) moving the first chimney component in engagement with the
second chimney component.
16. The method of claim 15, further comprising after step a)
the step of welding an upper end of the inner tubular collar to an inner wall
of
the open end section of the first chimney component.
17. The method according to any one of claims 15 and 16,
further comprising, prior to step b) the steps of inserting a tubular band
between the inner tubular collar and the open end section of the first chimney
component and of fixing the tubular band therein.

18. The method according to any one of claims 15 to 17,
further comprising a step d) of securing the connection with an assembly band.
19. The method according to claim 18, wherein said step d)
comprises providing an assembly band with a V-shaped mid section, mounting
exteriorly to the assembly band a pair of attaching bands, depositing a
silicone
material in the V-shaped mid section of the assembly band; placing the
assembly band with the attaching bands to receive the first and second flanged
extremities sealed together.

Description

CA 02471684 2004-06-18
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TITLE OF THE INVENTION
End-wise connection of second chimney components and
method therefor
FIELD OF THE INVENTION
[0001] The present invention relates to a joint assembly for end-wise
connection of two chimney components.
BACKGROUND OF THE INVENTION
[0002] Chimney systems permit the exhaust of combustion gases,
under positive, negative or neutral pressure, emanating from a variety of
appliances including, but not limited to, diesel engine and gas turbine
exhausts,
industrial oven exhausts, restaurant grease ducts, boilers, incinerators, etc.
(0003] The various components of known factory-built positive
pressure chimney systems include lengths, expansion joints, tees, elbows, etc.
These components typically have a flange-to-flange end at there joining point.
These flanges are joined together by aligning the flanges together. They are
then joined together by means of a v-shaped assembly band, which is clamped
around the flanges of both parts. A sealant is applied in the groove of the v-
band before it is clamped to the flanges.
[0004] There is still room in the art for a joint assembly for end-wise
connection of two chimney components and a method therefor.

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SUMMARY OF THE INVENTION
(0005) More specifically, there is provided a joint assembly for end-
wise connection of a first and a second chimney components, each one of the
first and second chimney components having an open end section with a
flanged extremity, comprising:
an inner tubular collar having one end insertable in the open end section
of the first chimney component and an opposite end insertable in the open end
section of the second chimney component; and
connection means fixedly securing the flanged extremity of the first
chimney component to the flanged extremity of the second chimney component
to secure the end section of the first chimney component to the end section of
the second chimney component with the inner tubular collar.
(0006) There is further provided a method for end-wise connection of
a first and a second chimney components in a joint assembly, each one of the
first and second chimney components having an open end section with a
flanged extremity, comprising the steps of:
a) inserting an inner tubular collar in the open end section of the first
chimney component;
b) applying a sealant circumferentially on the flanged extremity of the
open end section of the second chimney component; and
c) moving the first chimney component in engagement with the second
chimney component.
(0007) Other objects, advantages and features of the present
invention will become more apparent upon reading of the following non-
restrictive description of embodiments thereof, given by way of example only
with reference to the accompanying drawings.

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BRIEF DESCRIPTION OF THE DRAWINGS
(0008] In the appended drawings:
(0009] Figure 1 is a elevational view showing a joint assembly prior
to an interconnection of two chimney components;
(0010] Figure 2 is an elevational view showing the joint assembly of
Figure 1, with the two chimney components interconnected;
(0011] Figure 3 is an enlarged view of an assembly band and of
attaching bands securing a joint assembly; and
(0012] Figure 4 is an illustration of one half of an attaching band as
used in Figure 3.
DESCRIPTION OF EMBODIMENTS OF THE INVENTION
(0013] Referring to Figure 1, there is shown a joint assembly,
generally denoted 10, for connecting two chimney components, identified as A
and B. In the embodiment illustrated, the two chimney components A and B
are two lengths of a double wall chimney construction consisting of an outer
wall 12 and an inner wall 14 for chimney component A, and an outer wall 16
and an inner wall 18 for chimney component B.
(0014] The inner wall 14, 18 of each chimney component defines an
open end section 20, 22 having a diameter slightly greater than a diameter of
the remaining portion of the wall. Each end section 20, 22 has a flanged
extremity 24, 26.

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(0015] The joint assembly 10 comprises an inner tubular collar 28
having one end 30 insertable in the open section 20 of the chimney component
A and an opposite end 32 insertable in the end section 22 of chimney B (as
indicated by the arrows 34).
(0016 In the cases of high temperature applications, a tubular band
36 made of ceramic fiber may be circumferentially and exteriorly mounted over
part of an outer wall of the collar 28.
(0017 The end-wise connection of chimney component A to
chimney component B will now be described. First, the collar 28 is inserted in
the end connection 20 of chimney component A. The upper end 30 of the
collar is welded, for example seam welded or spot-welded, to the inner wall of
the end section 20. When a tubular band 36 is used, it is then inserted
between the collar 28 and the end section 20 and is fixed therein by means of
an adhesive 40. Subsequently, a sealant 42, such as a silicone, is applied
circumferentially on the flanged extremity 26 of the chimney component B.
Chimney component A with the joint assembly 10 is then moved as indicated
by arrows 34 to engage the chimney component B.
(0018 Referring to Figure 2, where the two chimney components A
and B are shown engaged to one another, the connection is further secured by
means of an assembly band 50,. having a V-shaped mid section 52, to which a
pair of attaching bands 54 and 56 are mounted exteriorly. The pair of
attaching
bands 54 and 56 is welded to the assembly band 50. A silicone material 58 is
deposited in the V-shaped section 52 of the assembly band 50. The assembly
band 50 and attaching bands 54 and 56 are placed in a manner that the
flanged extremities 24, 26 sealed to one another are received within the mid

CA 02471684 2004-06-18
section 52 of the assembly band to which they are further sealed due to the
adhesive 58.
[0019] Figure 4 illustrates the construction of the extremities 60 and
62 of an attaching band so that a full ring may be formed.
[0020] Although the present invention has been described
hereinabove by way of embodiments thereof, it may be modified, without
departing from the nature and teachings of the subject invention as defined in
the appended claims.

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